Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Margam Estate (Wales), 3 canlyniadau
- Talbot family, of Margam and Penrice Castle, 1 canlyniadau
- Penrice Estate (Wales), 1 canlyniadau
- Iolo Morganwg, 1747-1826, 1 canlyniadau
- Melincourt Furnace (Resolven, Wales), 1 canlyniadau
- Penrhywtyn Furnace (Llantwit-juxta-Neath, Wales), 1 canlyniadau
- Wortley Ironworks (Barnsley, England), 1 canlyniadau
- Glamorgan and Monmouthshire Canal, 1 canlyniadau
- Bush, Walker & Wade, 1 canlyniadau
- Thomas Price & Co., 1 canlyniadau
- Pob un
- Coal mines and mining -- Wales -- Glamorgan, 1 canlyniadau
- Glamorgan (Wales) -- Genealogy., 1 canlyniadau
- Iron industry and trade -- Wales -- Glamorgan., 1 canlyniadau
- Bards and bardism, 1 canlyniadau
- Glamorgan (Wales) -- Social life and customs., 1 canlyniadau
- Manors -- Wales -- Glamorgan., 1 canlyniadau
- Glamorgan (Wales) -- History, 1 canlyniadau
- Bishops -- Wales -- Llandaff., 1 canlyniadau
- Iron-works -- Wales -- Glamorgan., 1 canlyniadau
- Mines and mineral resources -- Wales -- Glamorgan, 1 canlyniadau